[Objective]To study the effect of Simvastatin on the regeneration of sciatic nerve of rats and its mechanism of immunoregulation.[Method]Twenty eight female Sprague-Dawley rats were used and the rats experienced the sciatic nerve crush injury.Animals were randomized into: Simvastatin-treated crush injury animals,vehicle-treated crush injury animals and sham-operated animals.Simvastatin(20 mg/kg) was given once a day over a time period of 14 day sby oral gavage via a pharyngeal tube.After surgery,the functional evaluation of nerve recovery,electrophysiologic assessment,histological assessment,serum IL-6 and TNF-? assessment were performed.[Result]The toe spread index of Simvastatin-treated crush injury animals was higher significantly than that of vehicle rats at d5 and d8(P

Objective To investigate the status of patient safety culture cognition and safety nursing behavior among nurses and examine the influence of patient safety culture cognition on safety nursing behavior of nurses using structural equation model. Methods A total of 350 clinical nurses were recruited in a hospital in Dalian with multi-stage sampling method. Patient Safety Culture Assessing Scale, Safety Behavior Scale were delivered to the investigation object. Results The mean score of the patients safety culture was 4.09±0.47, which was above average;the total score of nurses′safety nursing behavior was 4.74 ± 0.31, which was at high level; the causality model of patient safety culture cognition and the safety nursing behavior was accepted (path coefficient=0.35,P<0.01). Conclusions Nurses′ patient safety culture cognition has a significant impact on safety nursing behavior. Hospital should cultivate the awareness of the patient safety culture, so as to promote the safety nursing behavior.

Objective To evaluate the effect of azithromycin on mycoplasmal pneumonia (MP).Methods We divided 90 MP cases into azithromycin and erythromycin treatment groups. In azithromycinThe pyretolysis time, cough improvement time, the disappearing time and the mean length of hospitalization of azithromycin group were shorter than that of erythrornycin group. The local ache, stomach and intestinal tract adverse reaction, and damage of hepar function were less than these in erythromycin group. ConclusionAzithromycin is an effective and safe drug to MP.

Problem-based learning(PBL)plays an improtant role in fostering the ability of problem-solving,creative thinking and active learning of medical undergraduates.Based on the present clinical education resources,how to implement PBL at the largest advantages is the main issue we should concern.

Objective To study gastroscopic features and clinical diagnosis of prepyloric mem-brane. Methods Clinical characteristics,gastroscopic manifestation and operational findings of 18 pa-tients,whose prepyloric membrane have been confirmed by operations,were retrospectively reviewed. Results Gastroscopie findings showed that all the 1 8 patients suffered gastric retention and pyloric obstruc-tion to some degree,with 4 cases of esophageal erosion and/or esophageal ulcer,five cases of erosive hemor-rhagic gastritis,one case of ulcer at gastric antrum,gastric comer and pylorus respectively. There were 2 ca-ses of aperture like narrowing in prepyloric region. And there were 9 cases that showed obvious congestion and edema in the prepyloric mucus,with uniform circular mucusal protrusion around the stenosing stoma,and volcano-like depression in the middle,three cases of which showed mucosal membrane standing out to the gastric cavity. The membrane found in the above 11 cases located in pyloric exit or tube,and they under-went membrane excision and py|oroplasty. The other 7 cases showed thick mucosal folds at the distal antrum with radial arrangement. Round or irregular stenosing stoma were observed. These cases proved to be antral membrane,1-3 cm away from the duodenum and pylorus,and underwent simple membrane resection. Conclusion Congenital prepyloric membrane is rare and it likely mis-diagnosed. The onset and the degree of symptoms depend on the diameter of aperture of the membrane. Early endoscopy,in addition to barium contrast,should be performed on those children who have intermittent bilious vomiting,where false-positive radiological findings can be avoided,therefore,to facilitate right diagnosis and appropriate operation.

Objective To evaluate the clinical efficacy of polyethylene glycols (PEG) on functional constipation in children by Meta-analysis.Methods The Medline,Pubmed,Cochrane database,Embase,VIP database,China Knowledge Resource Integrated Database (CNKI) and WANFANG MED ONLINE resources were reviewed for the treatment with polyethylene glycols on functional constipation in children from the inception to December 2016 to collect all randomized controlled trials (RCTs) or comparative prospective studies.Revman 5.3 software was used to assess risk of bias of the Cochrane Collaboration's tool.A Meta analysis of the therapeutic effect of polyethylene glycols on functional constipation in children was conducted by Stata1 1.0 software.The pooled standardized mean difference (SMD) and 95％ confidence interval (95％ C/) were calculated in order to know the clinical efficacy of polyethylene glycols on functional constipation in children.Results Seven literatures were included in our Meta analysis.There were 662 children were included in this study,and they were divided into PEG treatment group (n=318) and non-PEG treatment group (n=344).The forest plot results of Meta analysis showed that the main effect index weekly stool frequency was significantly higher in PEG treatment group than that of lactulose group,according to the different control measures.The main effect index weekly stool frequency was significantly higher in PEG treatment group than that of non-PEG treatment group,according to the mapping forest chart displayed different clinical effect observation time points.Results from Meta analysis showed that the secondary effect index successful stool consistency improvement was significantly higher in PEG treatment group than that of non-PEG treatment group,according to different observation time points.Conclusion Polyethylene glycols is safe and effective in the treatment of functional constipation in children.

Objective To assess the relationships between bile reflux gastritis (BRG) and Helicobacter pylori infec-tion in children. Methods A total of 258 BRG cases were included in BRG group and 1 749 gastric mucosal inflammation cases without bile reflux were used as control group. Children with BRG were divided into three groups according to the dis-ease classification and they were also sub-divided into three groups according to the bile reflux indexing. The infection rates of Helicobacter pylori were analyzed in different groups. Results Compared to control group (34.02%), the infection rate of Helicobacter pylori was significantly higher in BRG group (46.12%). The infection rates of Helicobacter pylori infection were 40.86%(38/93), 45.53%(56/123) and 59.52%(25/42) in patients with mild, moderate and severe infections. There was no significant difference between them (χ2=4.089, P>0.05). The positive rates of Helicobacter pylori infection were 37.32%(53/142), 53.68%(51/95) and 71.43%(15/21) in children withⅠ,ⅡandⅢreflux indexing, and there was significant differ-ence between them (χ2=12.022,P<0.01). Conclusion Helicobacter pylori infection is one of the causative factors leading to BRG in children. The bile regurgitation increased with the increasing of Helicobacter pylori infection.

Objective To explore the relationship between H.pylori (HP) infection and the functional dyspepsia (FD) by 4-lead electrogastrography (EGG). Methods The data of the gastric electrical activity of 163 children with FD, includ-ing 103 children with HP infection (group A), 60 without HP infection (group B) and 22 healthy controls (group C) were mea-sured by 4-lead EGG, which included normal slow wave percentage (N%), bradygastria percentage (B%), tachygastria per-centage (T%) and motilin uneven rhythm percentage (A%). EGG frequency and power examination included the main fre-quency (DF), the main power (DP) and postprandial/pre-prandial gastric electrical main power ratio (P/R). EGG data was compared between three groups. Results There was significant difference in pre-prandial and postprandial percentage of different slow wave frequency between group A and group B. There were no significant differences in pre-prandial and post-prandial changes of DF and DP between group A and group B. There was no significant difference in the pre-prandial and postprandial percentage change of different slow wave frequencies in 84 HP negative patients. But the significant change was found in pre-prandial and postprandial change of DF, DP and P/R. Conclusion The eradication of HP improved the gas-tric electrical activity and relieved the postprandial symptom in children with functional dyspepsia under HP infection.

93% at 36 months. The local control rate was 100%. The 1- and 3-year survival rates was 100% and 98% , respectively. Conclusions Tangential field radiotherapy for early breast cancer after conservative surgery has a satisfied result in both tumor control and cosmetic outcome, which can definitely improve the life quality of the patients.

Objective Motility is an important physiological characteristic of a mature sperm.Nerve growth factor(NGF) is a protein essential for the development,maintenance and survival of the peripheral and central nervous systems.NGF and its receptors TrkA and p75 are widely expressed in the testis,accessory reproductive organ,and the epididymal sperms.In the present study,we investigated the role of NGF on human sperm motility.Methods Use 0.1,1 and 10 μmol/L concentrations of NGF,on sperm motility study to investigate the optimal concentration.Use CASA to detect Sperm motility changes every 10 minutes in an hour after 10 μmol/L NGF was added to the semen.Results The parameters of sperm motility increased after NGF incubation had significant difference, in particular,VAP,VSL,VCL,BCF and LIN mean were significantly increased more than 32%.MAD,STR,ALH and WOB mean had no notable difference.Furthermore,NGF promotes the sperm motility in a time- and dose- dependent manner.In addition,the enhancement of NGF on sperm motility was more stronger than those of sperm culture medium.Conclusion Our findings suggest that NGF plays a promoted role in human sperm motility.